Aube TI071 lightswitch wiring

I was previously helped in this thread 10 months ago and I'm here for similar advice. I was hoping someone could tell me how to hook up the wires on an Aube TI071 light switch I just bought. There is only one switch to these lights, so I'm assuming this means it's a single-pole installation.

There are three wires that come out of the Aube switch; black (line), blue (load), and white (neutral).

There are tons of wires coming out of the wall. The previous switch used two black wires (no labels for line or load on the wires nor the switch) and did not use a ground wire.

Can anyone tell me which wires should connect to which? Pictures are below. I tried connecting black1-to-black and black2-to-blue, as well as as black2-to-black and black1-to-blue, and neither worked. According to the manual,

Quote:

the switch cannot be used if there is no neutral wire (indicated by white wires joint together) inside the electrical box.

so I'm assuming I need to figure out which wire is the ground wire and connect the white to it.

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Aube TI071 lightswitch wiring

There's a white wire and a copper wire that can be seen the first picture, neither of which were connected to the previous switch. Is one of them (I'd assume the white) a neutral wire?

If it is, it's connected to the red connector on the left, which is being used by the other switches. Is it okay to "double up" in a sense and connect the white wire from the new switch to that same red connector?

Aube TI071 lightswitch wiring

There's a white wire and a copper wire that can be seen the first picture, neither of which were connected to the previous switch. Is one of them (I'd assume the white) a neutral wire?

If it is, it's connected to the red connector on the left, which is being used by the other switches. Is it okay to "double up" in a sense and connect the white wire from the new switch to that same red connector?

NO! if the white wire is connected to the red wire, it is a hot conductor and will fry the switch.

Aube TI071 lightswitch wiring

on these switches it can make a difference. The black that is spliced to other blacks is the one you want as the hot wire. At first I thought the red was referring to the wire also. Then I looked at the pictures and realized he was referring to a wire nut.

Aube TI071 lightswitch wiring

It worked! Thank you!! There was indeed a wirenut off to the left with all the white wires.

But, one more thing...

I have one more of these I wanted to install, but this one is on a 3-way switch. The existing switch is just like the first, but instead of having only two wires (black and black), it has four (black, black, red, and ground).

This is for a front porch light. In a perfect world, I'd ignore the other 3-way switch that's 10 feet away in the dining room and control everything through this one. I doubt that means I can hook it up like the last one though and ignore the red and ground wires.

So the bottom-line question is, again, what goes to what? The black(line) to black(line) and black(load) to blue(load) seem pretty obvious, and I assume I'd again feed the white neutral line to the wirenut with the other white neutral lines, but what about the existing red and ground wires? Do I just wrap them up and tuck them away so they don't touch anything? Do I hook them up somewhere? Or is this just not possible?

Aube TI071 lightswitch wiring

The first (TI071) is what I bought two of, but I think the second (TI070) is the same but made for a 3-way switch. I think I'll have to order that one, and if I don't hear anything I'll assume that's the case. But if it is possible to use the TI071 for a 3-way, let me know.